Beriker was also the founder and CEO of Search123, a paid search engine that launched in October 2000 and was acquired by ValueClick in May 2003. Prior to Search123, Beriker practiced corporate law, representing early and mid-stage technology companies and entrepreneurs.

I had lunch with Jim a couple weeks ago when he was in New York. He outlined his vision to make Efficient Frontier the dominant worldwide optimization platform for all digital advertising. When he says EF is well on its way to achieving this goal, he’s giving notice that the digital advertising platform race won’t be Google-DoubleClick vs. Microsoft/Aquantive — with or without Yahoo, the company where Siminoff made her reputation as a dealmaker.

Part of the founding executive team of Yahoo!, Ellen Siminoff led business development, corporate development, and the small business and entertainment business units. Ellen has served on the board of directors for online ticket broker, StubHub, and is currently on the boards of US AutoParts, BuildDirect, 4Info, and Journal Communications. Ellen graduated Stanford’s Graduate School of Business with an MBA and has a bachelor’s degree in Economics from Princeton University.

Geoff Yang, Efficient Frontier director and founding partner of Redpoint Ventures noted Siminoff’s skills as a dealmaker and innovator. He praised her leadership in building the largest independent SEM provider in the world.

“Efficient Frontier’s success is a testament to Ellen’s unquestionable dedication and leadership talents, and cements her standing in the Silicon Valley as a company builder and thought leader,” said Yang in a statement.